Home / 12,121.39-18,180.62-3,237.40

Finding the Fourth Proportional to 12,121.39, 18,180.62 and 3,237.40

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Solution

The fourth proportional to 12,121.39, 18,180.62 and 3,237.40 is: 4,855.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.39 : 18,180.62 = 3,237.40 : x
  2. Step 2: Convert to fraction form
    12,121.39/18,180.62 = 3,237.40/x
  3. Step 3: Cross multiply
    12,121.39x = 18,180.62 × 3,237.40
  4. Step 4: Simplify right side
    12,121.39x = 58,857,939.19
  5. Step 5: Solve for x
    x = 58,857,939.19/12,121.39
  6. Step 6: Final answer
    x = 4,855.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.